function listTopics(Aliyun_Sls_Client $client, $project, $logstore) { $request = new Aliyun_Sls_Models_ListTopicsRequest($project, $logstore); try { $response = $client->listTopics($request); var_dump($response); } catch (Aliyun_Sls_Exception $ex) { var_dump($ex); } catch (Exception $ex) { var_dump($ex); } }